S-98060A750 3/8"-16 x 3" ASTM A307, SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding environments
• Enhanced anti-rotation performance through knurled neck design, preventing loosening under vibration and load
• Reliable fastening strength with Grade 2 classification and 60,000 PSI tensile strength for medium-duty applications
• Optimized thread engagement with UNC coarse threading and Class 2A fit, ensuring quick assembly and consistent performance
• Versatile partial threading allowing unthreaded shank to bear shear loads while threaded portion secures nuts
• Wide rounded head profile providing larger bearing surface to prevent pull-through in wood and soft materials
• Industry compliance assurance meeting ASTM A307, SAE J429, RoHS 3, and REACH standards for quality and safety

Professional Applications & Engineering Value

This Grade 2 zinc-plated steel carriage bolt delivers exceptional engineering value for industrial fastening applications where vibration resistance and corrosion protection are critical. The knurled neck design actively prevents rotation during installation and under dynamic loads, solving common loosening issues in machinery, structural frameworks, and transportation equipment. With Rockwell B69 hardness and 60,000 PSI tensile strength, this 3/8"-16 UNC coarse thread fastener provides reliable performance in wood-to-metal connections, trailer assemblies, and agricultural equipment. The zinc plating offers sacrificial protection against environmental elements, while the partially threaded configuration allows the unthreaded portion to carry shear loads effectively. These carriage bolts are engineered to maintain integrity in demanding conditions where standard fasteners might fail.

Specification Summary & Compliance

This 3/8"-16 carriage bolt features precise Class 2A thread fit with UNC coarse threading and right-hand thread direction. Manufacturing complies with ASTM A307 and SAE J429 specifications for quality assurance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety standards. Dimensions include 3" length, 0.844" head diameter, and minimum 1" thread length, ensuring consistent performance across industrial applications.